False advertising

Bought a 2003 Ford Ranger 2500td Hi-Trail XLT double cab bakkie (diesel) from auction online. After the cash purchase I was told that there's a Lexus petrol engine in the bakkie... Why did you state that there's a 2500td engine of there's not? If I knew this information I wouldn't have bought the bakkie in the first place. I misled. Now they want me to take the bakkie as is. I am also going to report this to MIOSA